CVE-2026-75587

Mattermost Desktop App versions <=6.2 6.2.2.0 fail to redact the pre-auth secret when generating a diagnostics report, which allows a local attacker with access to a user's diagnostics report or log files to obtain the plaintext pre-auth secret configured for a connected server via inspecting the Server Connectivity (Step-3) diagnostics output. Mattermost Advisory ID: MMSA-2026-00716

CVSS v3 3.6 LOW

3.6^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://mattermost.com/security-updates	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-17 23:16

Updated : 2026-08-19 15:53

NVD link : CVE-2026-75587

Mitre link : CVE-2026-75587

CVE.ORG link : CVE-2026-75587

JSON object : View

Products Affected

mattermost

mattermost_desktop

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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